479
FNCA52 TJSJ 011930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST FRI MAY 1 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-020800-
SOUTHEAST COASTAL PLAINS-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10 10
TEMP (24H TREND) 71 (-2) 89 (+2) 72 90
RH % (24H TREND) 88 (-2) 48 (-10) 91 47
WIND 20FT/EARLY(MPH) E 11 E 16 E 12 E 18
WIND 20FT/LATE(MPH) NE 10 SE 16 E 10 SE 18
MIXING HGT(FT-AGL/MSL) 4450 4780
TRANSPORT WND (MPH) E 16 E 17
VENT RATE (KT-FT) 62300 71700
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-020800-
SOUTHERN HILLS-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 0 10
TEMP (24H TREND) 68 (-3) 86 (+4) 68 86
RH % (24H TREND) 96 (+1) 62 (-10) 96 59
WIND 20FT/EARLY(MPH) E 10 E 12 E 11 E 13
WIND 20FT/LATE(MPH) E 10 SE 12 E 11 SE 13
MIXING HGT(FT-AGL/MSL) 4850 5210
TRANSPORT WND (MPH) E 15 E 16
VENT RATE (KT-FT) 63050 72940
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-020800-
NORTH COASTAL PLAINS-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 0 20
TEMP (24H TREND) 71 (-2) 89 (+1) 71 90
RH % (24H TREND) 97 (+2) 59 (-7) 96 57
WIND 20FT/EARLY(MPH) E 12 E 12 E 11 E 12
WIND 20FT/LATE(MPH) SE 9 E 13 SE 10 E 16
MIXING HGT(FT-AGL/MSL) 4680 5070
TRANSPORT WND (MPH) SE 14 SE 15
VENT RATE (KT-FT) 56160 65910
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-020800-
NORTHERN HILLS-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY CLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE TSTMS
CHANCE PRECIP (%) 70 50 0 30
TEMP (24H TREND) 68 (-3) 87 (+1) 69 88
RH % (24H TREND) 97 (0) 62 (-6) 96 59
WIND 20FT/EARLY(MPH) E 10 E 10 E 10 E 10
WIND 20FT/LATE(MPH) E 8 E 12 SE 8 E 12
MIXING HGT(FT-AGL/MSL) 4830 6020
TRANSPORT WND (MPH) SE 10 E 10
VENT RATE (KT-FT) 43470 54180
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-020800-
WEST COAST-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE TSTMS
CHANCE PRECIP (%) 60 40 0 20
TEMP (24H TREND) 71 (-1) 90 (+2) 71 90
RH % (24H TREND) 98 (+2) 61 (-7) 95 59
WIND 20FT/EARLY(MPH) E 13 E 12 E 13 E 14
WIND 20FT/LATE(MPH) E 10 E 16 E 13 E 16
MIXING HGT(FT-AGL/MSL) 5070 4620
TRANSPORT WND (MPH) E 10 SE 13
VENT RATE (KT-FT) 45630 50820
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-020800-
EASTERN INTERIOR-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10 20
TEMP (24H TREND) 69 (-3) 87 (+2) 70 87
RH % (24H TREND) 96 (0) 61 (-6) 97 60
WIND 20FT/EARLY(MPH) E 10 E 12 E 12 E 13
WIND 20FT/LATE(MPH) E 11 E 12 E 13 E 13
MIXING HGT(FT-AGL/MSL) 4870 5310
TRANSPORT WND (MPH) SE 15 SE 15
VENT RATE (KT-FT) 63310 69030
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-020800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 30 30
TEMP (24H TREND) 68 (-3) 83 (+4) 68 83
RH % (24H TREND) 98 (0) 65 (-10) 99 65
WIND 20FT/EARLY(MPH) E 9 E 11 E 9 E 12
WIND 20FT/LATE(MPH) E 8 SE 11 E 10 E 12
MIXING HGT(FT-AGL/MSL) 4610 4460
TRANSPORT WND (MPH) SE 15 SE 15
VENT RATE (KT-FT) 59930 57980
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-020800-
CENTRAL MOUNTAIN RANGE-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY MCLEAR CLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE TSTMS
CHANCE PRECIP (%) 60 40 0 20
TEMP (24H TREND) 65 (-4) 85 (+5) 66 85
RH % (24H TREND) 99 (+2) 65 (-11) 98 63
WIND 20FT/EARLY(MPH) E 9 E 9 E 8 E 10
WIND 20FT/LATE(MPH) E 5 SE 10 E 6 E 10
MIXING HGT(FT-AGL/MSL) 5330 6320
TRANSPORT WND (MPH) E 9 E 10
VENT RATE (KT-FT) 42640 56880
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-020800-
CAYEY MOUNTAIN RANGE-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20 30
TEMP (24H TREND) 69 (-1) 82 (+2) 69 82
RH % (24H TREND) 98 (-1) 67 (-5) 98 66
WIND 20FT/EARLY(MPH) E 8 E 11 E 9 E 12
WIND 20FT/LATE(MPH) E 8 E 11 E 9 E 12
MIXING HGT(FT-AGL/MSL) 4610 4720
TRANSPORT WND (MPH) E 15 SE 17
VENT RATE (KT-FT) 59930 70800
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-020800-
VIEQUES-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40 30
TEMP (24H TREND) 74 (-1) 86 (0) 74 86
RH % (24H TREND) 91 (+1) 61 (-2) 91 61
WIND 20FT/EARLY(MPH) E 13 E 14 E 14 E 16
WIND 20FT/LATE(MPH) E 13 E 12 E 17 E 13
MIXING HGT(FT-AGL/MSL) 3910 3560
TRANSPORT WND (MPH) E 16 SE 14
VENT RATE (KT-FT) 54740 42720
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-020800-
CULEBRA-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40 30
TEMP (24H TREND) 75 (-2) 89 (+2) 75 89
RH % (24H TREND) 91 (+3) 60 (-6) 93 60
WIND 20FT/EARLY(MPH) E 12 E 14 E 14 E 16
WIND 20FT/LATE(MPH) E 12 E 12 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3700 3360
TRANSPORT WND (MPH) E 17 SE 15
VENT RATE (KT-FT) 55500 43680
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-020800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 10 0
TEMP (24H TREND) 72 (-2) 90 (+2) 72 91
RH % (24H TREND) 93 (0) 48 (-10) 88 48
WIND 20FT/EARLY(MPH) E 12 E 17 E 18 E 19
WIND 20FT/LATE(MPH) E 13 SE 20 E 18 SE 21
MIXING HGT(FT-AGL/MSL) 5030 4840
TRANSPORT WND (MPH) E 20 E 21
VENT RATE (KT-FT) 85510 87120
DISPERSION 5 5
DSI 5 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-020800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 40 10
TEMP (24H TREND) 75 (-2) 86 (+1) 75 86
RH % (24H TREND) 92 (+5) 63 (-3) 93 63
WIND 20FT/EARLY(MPH) E 12 E 14 E 14 E 16
WIND 20FT/LATE(MPH) E 14 E 12 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3540 3340
TRANSPORT WND (MPH) E 17 SE 16
VENT RATE (KT-FT) 53100 46760
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-020800-
ST CROIX-
330 PM AST FRI MAY 1 2026
TONIGHT SAT SAT NIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20 10
TEMP (24H TREND) 74 (-2) 87 (+1) 74 87
RH % (24H TREND) 91 (+2) 63 (-2) 91 63
WIND 20FT/EARLY(MPH) E 13 E 14 E 13 E 17
WIND 20FT/LATE(MPH) E 14 E 12 E 17 E 13
MIXING HGT(FT-AGL/MSL) 4370 4490
TRANSPORT WND (MPH) E 17 SE 17
VENT RATE (KT-FT) 65550 67350
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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